Remote controls mounted on movable carriages



Oct. 22, 1957 H. Y. HALLocK REMOTE CONTROLS MOUNTED ON MOVABLE CARRIAGES Filed March 8, 1955 Oct. 22, 1957 H. Y. HALLocK Y REMOTE coNTRoLs MOUNTED ou MovABLE CARRIAGES Filed March s, 1955 2 Sheetsheet 2 INVENTOIE Aff'oHNES/ United States APatent REMOTE CONTROLS MOUNTED ON fMOVABLE CARRIAGES Hiram Y. Hallock, Madison, Wis., assignor to'Jackson Lumber HarvestcrCompany, vlnc.,-` lrevvton, fla., a corporation of Alabama Application" March S, 1955, ,Serial No.493,001

12: Claims. (Cl. 14S-i105) This invention relates. to improvementsin remote controls mounted on movable carriages.

Certain types of devices such as sawmills may-employ a reciprocating carriage on which thework is'mOunted,

the carriage beingfdriven bya prime-mover Alocated in Xed position on theframe. On those deviceslwhere au "operator rides on the carriage-itis -highlyde'sirable to have a simple form of control'for readily controlling the direction of operation and the speed of theprime mover from a position onthe carriage. `Such control mustsalso be operable whilethe carriage is moving so thatfits direction of movement can be reversed when required. To

kaccomplish this with simple mechanismwhich eliminates the necessity of using dangling hydraulic conduits or the like, `presents riproblems.

It is a general object lof the presentvcinvention'tofpro- Vvideintadevicelofthe class described, novel'meansoperthe other, even when the carriage ismoving,ito thereby control the direction of operation and speed oftheY motor -and-hencefthe direction of movement andfspeed `of the carriage.

-A` morespecic-object of the invention "is toiprovide control mechanism'as above described `whichis'particularly Welladaptedforuse in a device having an 'hydraulic motorrandvalve` mounted o'nthe fixed frame,` theretbeing meanson the vcarriage operableeven'when the carriage is moving for'actuating said valve to thereby c-ontr'ol the 'flow of uid to thehydraulic motor and hence the direction and speed-of movement of the carriage.

With theabove and other objects in view, the invention consists'of the-improvements in controls mounted on movable carriages, and all of itsparts'and combina` tions, as'rset forth-in the claims, and `all equivalents thereof.

'lntheiaccon'rpaning drawing, iliustrating several pre1 ferred embodiments of the invention, in which the same reference numerals designate the same parts in all lof the views:

Fig. l is a side elevational View showing the invention applied to asawmill ofthe type having a reciprocating carriage, parts being broken away and shown in section;

Fig. 2 is a top View of the sawmill, part of, thecarriage platform being broken away;

Fig.` 3 is a fragmentary plan view showingthe control Amay be` of any well known type. in avertical 'centralposition the valve will cause-'huid from thepump `-to-be by-passed back to thereservoir firice elements in a position to operate the carriage in a reverse direction from that of Fig. 2;

Fig. 4 is a transverse sectional view taken on the line 4-4 ofFig. 2;

Fig. 5 is a vieW looking at the bottom of the control disc as indicated by the line 5 5 of Fig. l;

Fig. 6 is a fragmentary'plan view,gpartially diagrammatic, showing a modified form of control unit;

Fig. 7 is asimilarviewfshowing another modified form of control unit; and Y Fig. 8 is a similar View showing still-another modied form of control unit.

Referring now-'moreparticularly to the drawing, fthe numeral -10 designates a iixed frame which mayY include side'sections 11and12 suitably connected in spacedapart condition by transverse members 13, 14 andvIS. -Projecting laterally from-theside 11 is anextensionframe 16 -which-supportsbearings/St) for'the drivevshaft 8101:' a circular saw "518', thesaw being driven by a sprocket chain-82 yor'the like from any suitable source coacting uwiththe-sprocl-et wheel A83 on-'the saw Vshaft 81. vThe extension T16 Lalso supports atmotor -19 which may be Vof any Adesired type. `The present invention, however, is

well suited foruse in'connection with an hydraulic motor and the numeral "-19 therefore ldesignates such hydraulic y motor.

.'Hydraulicluid from the reservoir 2t) may be circulated oscillatable-lever '24 mounted onfa shaft 25. v'This valve When the'V lever 2-4 is through line 26- without `causing lanyoper-ation of the hydraulicfmotorl 'When-"the valve'lever'24is in the position of Figs. 2 and 4, then uid will llow1 to Vthe motor through line 27-an`df-\i/illbe'returned V'through line4 28 to the valve and thenrthrough line`26 backto the reservoir. 'This will cause operation of -the motorl in one direction. -When vthe Ycontrol `valve lever 24 isin the position of f Fig. i3, then fluid under. pressure'from the pu-mp 21- will Yflow outof theyalve'through the line'28 to the hydraulic motor 19 to operatethe -latter in a reverseldirection, Vand will be returned'through the line "27.

Journalled transversely ofthe frameis a carriage drive shaft 29 which carries a sprocket wheel'Sl on its outer end. The sprocket wheel3tl may be connected by an endless chain 31 with a sprocket wheel 32 mounted rigidly on the motor shaft 18. Mounted rigidly on the shaft 29 is a drum 33. VA cable 34 has one end connected as at 35 to the end of the carriage 36. The cable then extends longitudinally of the frame and passes around a suitably mounted pulley 37. From the underside of the pulley the cable extends to the drum 33 and may be wrapped a number of times around the drum. On the other side of the drum the cable extends to the underside of a pulley V3'7 and up around the latter, the end of the cable `being fastened to the rear end of the carriage as at 3S. It is Vthus apparent that when the drum SSV-is rotated that -the carriage will be moved in yone direction or the other along the frame 1G, depending upon the direction of rotation of the drum.

The upper rails of the side sectionsfll and 12 carry rollers 39which are suitably mounted. The feed carriage 36 may have depending side flanges 40 which embrace` the lrollers 39, the carriage being movable over the rollers in side ofthe transversemember 42. Suitably journalled in the sleeves 43 and 44 is a vertical shaft 4 5 having its lower end projecting from the bottom of the sleeve 44 and carrying a control disc 46. The upper end of the shaft 45 `has amanually operable control handle 4 7 rigidly connected thereto. i if I Rotatably mounted on Ytllefmritrol disc 46vare sets of pulleys 48 and 49, the pulleys being preferably mounted near the periphery of the disc*46and `heilig spaced 90 l f 53 the cable extends in a direction transversely of the frame and is connected to the control lever 24 of the valve 23, as is shown in Fig. 4.

Another control cable S has one end anchored to a spring at the frame as at 151. The cable 55 is guided around the other set of pulleys 49 of the control disc and then extends longitudinally to the far end of the frame where it extends around a pulley 56 and then in a reverse direction to an intermediate pulley 57. From the pulley 57'the cable extends transversely of the frame to connect with the control lever 24 for the valve 23.

In operation, if the operator wishes to have the carriage move in a feed direction, the operator on the platform 41 will move the handle 47 to the position of Fig. 2. Due to the position of the pulleys 49 when the handle is in the position of Fig. 2, this will exert a pull on the control cable 55 swinging the valve lever 24 to the full line position of Fig. 4, and allowing hydraulic uid under pressure from the pump 21 to pass through the control valve 23 to the hydraulic motor 19 in a direction to cause forward feed movement of the carriage 36, the saw being independently rotated in the direction indicated by the arrow in Fig. 1.

After the carriage has completed its feed stroke the operator on the platform can shift the control unit handle 47 to the position of Fig. 3. This will cause a slackening of the cable 55 but instead will move the pulleys 48 to the position of Fig. 3 to exert a pull on the cable 50. This will move the valve lever 24 to the dot and dash line position of Fig. 4. As a result the Vdirection of ow of hydraulic uid to the hydraulic motor '19 will be reversed and hence the direction of rotation of the drum 33 will beU tom of the sheet the cable 50 is slackened and a pull is exerted on the cable 5S.

The operation of the form of the invention of Fig. 7 is substantially the same, parts corresponding to those of Fig. 6 being primed, In Fig. 7 the control bar 61 is shown in neutral. If it is slid toward the top of the sheet the cable 50 will be slackened and there will be a pull on the cable 55 to shift the control lever 24 to the dotted line position of Fig. 4. Movement of the control bar 62 in the reverse direction causes a reverse operation of the control lever 24. j

In the modification of Fig. 8 a xed bar 66 may be suitably mounted on the transverse frame member 42 of the carriage. Pivoted to the bar 66 as at 67 are parallel links 68. A T-shaped operating handle 69 has its ends pivoted to the links 68. Pulleys 70 are rotatably mounted on one of the links 68 and pulleys 71 are rotatably mounted on the other link 68. Movement of the control handle 69 in the direction indicated by the arrows will cause a slackening of the cable 55 and a pull on the cable 50 to shift the valve lever 24 to the full line position of Fig. 4. Movement of the handle 69 in a reverse direction to that Vof the arrows will exert a pull on the cable 55 and will cause a reverse operation of the valve.

It is apparent that the present invention provides a very simple remote mechanical control for the valve of a fluid control assembly without the necessity of having uid hoses moving with the carriage. The control system may be employed to shift any type of lever on the fixed frame, and its utility is therefore not limited to use with the particular hydraulically operated mechanism shown.

Various changes and modifications may be made, as well as other adaptations without departing from the spirit of the invention, and all of such changes and adaptations are contemplated, as may come within the Scope of the claims.

What I claim is:

1. In combination a frame, a carriage mounted for movement on said frame, a motor on said frame, transmission means between said motor and carriage for transmitting motion to the latter, means controlling the operation of said motor including cable means extending along said frame independently of said transmission means, a control unit on said carriage through which said cable means is guided as the carriage moves along with respect to said cable means and frame, said control unit having manually operable means on the carriage which is movable to exert a force on said cable means without interfering with the movement of the carriage relative to said cable means to control said motor and hence the movethe reservoir 20 through line 26, without causing operationV of the motor 19.

In the modification of Fig. 6, a control unit 69 on the transverse member 42 of the carriage is used. Slidable in a groove 61 of the control unit 60 is an operating bar 62 which may be suitably moved from a position on the carriage. The operating bar 62 carries rotatably mounted pulleys 63 and there are sets of pulleys 64 and 65 on the control unit 60. The control cable 50 is guided around the pulleys 65 and 63 in the manner shown, and the control cable 55 is guided around the pulleys 64 and 63, as illustrated. As a result of this arrangement, if the con* trol bar 62 is moved toward the top of the sheet, there will be a slacking of the cable 55 and a pull on the cable 50 to shift the valve lever 24 to the position shown Vby full lines in Fig. 4. When the bar is in the position Vshown in Fig. 6, it is in neutral. When it is moved toward the botment of said carriage.

' 2. In combination a frame, a carriage mounted for reciprocating movement on said frame, a driven rotatable member on said frame, means including an elongated flexible member connected between said rotatable member, frame and carriage for transmitting motion to the carriage, meansv independent of said flexible member for controlling the direction of operation of said rotatable member including a control element on the frame and including cable means extending along said frame and connected at one end to the frame and at the other end to the control element, a control unit on said carriage through which said cable means is guided as the carriage moves along with respect to said cable means and frame, said control unit having manually operable means on the carriage which is movable to alter the effective length of said cable means and thus move said control element to control the direction of rotation of said rotatable member, and hence the direction of movement of said carriage.

3. In combination a frame, a carriage mounted for reciprocating movement on said frame, a motor on said frame, transmission means between said motor and carriage for transmitting motion to the latter, means for controlling the direction of operation of said motor including cable means extending along said frame independently of said transmission means, a control unit on said carriage lthrough which sidcable means is guided as the carriage Ymoves -along with respect to said cable means and lframe, said Vcontrol'uriit having manually operable meansonthe carriage which kis movable to exert `a forcein a Vselected direction' on said cable means-without interfering withthe movementlof the carriage-relative to said cable means -tocontrolfthedirection of operation of said motor and hence the direction of movement of said carriage.

4. In combination a frame, a carriage mounted for reciprocating movement on said frame, a motor on said frame, transmission means between said motor and car- Iiage for transmitting motion to the latter, means for controlling the speed and direction of operation of said motor including cable means extending along said frame independently of said transmission means, a control unit on said carriage through which said cable means is guided as the carriage moves along with respect to said cable means and frame, said control unit having manually operable means on the carriage which is movable a selected amount in a selected direction to exert a force on said cable means without interfering with the movement of the carriage relative to said cable means to control the speed and direction of operation of said motor and hence the speed and direction of movement of the carriage.

5. In combination a frame, a carriage mounted for reciprocating movement on said frame, a motor on said frame, transmission means between said motor and carriage for transmitting motion to the latter, means for controlling the direction of operation of said motor including two cables extending along said frame independently of said transmission means, a control unit on said carriage through which said cables are guided as the carriage moves along with respect to said cables and frame, said control unit having manually operable means on the carriage which is movable to exert a force on one or the other of said cables without interfering with the movement of the carriage relative to said cable means to control the direction of operation of said motor and hence the direction of movement of the carriage.

6. In combination a frame, a carriage mounted for movement on said frame, a motor on said frame, transmission means between said motor and carriage for transmitting motion to the latter, means for controlling the operation of said motor including cable means extending along said frame independently of said transmission means, a control unit on said carriage including rotatably mounted pulleys around which said cable means is guided as the carriage moves along with respect to said cable means and frame, said control unit having manually operable means on the carriage which is movable to shift the position of said pulleys and exert a force on said cable means without interfering with the movement of the carriage relative to said cable means to control said motor and hence the movement of the carriage.

7. In combination a frame, a carriage mounted for movement on said frame, a motor on said frame, transmission means between said motor and carriage for transmitting motion to the latter, means controlling the operation of said motor including cable means extending along said frame independently of said transmission means, a control unit on said carriage including a rotatably mounted disk having rotatable pulleys thereon around which said cable means is guided as the carriage moves along with respect to said cable means and frame, said control unit including means on the carriage for rotating said disk to shift the position of the pulleys thereon and exert a force on said cable means without interfering with the movement of the carriage relative to said cable means to control said motor and hence the movement of said carriage.

8. In combination a frame, a carriage mounted for reciprocating movement on said frame, a iluid pressure operatedmotorfon-s'aid fra-me, transmission means between said motor fandfcarriagefor-transmitting motion tothe .along saidframe-and connectedY theretofacontrolunit on Ysaid carriage through --which said cable. means is Y guided as the carriage moves along withrespect to Vsaid cable means and frame, said control unit having manually` operable means on the carriage which is movable to exert a force on said cable means without interfering with the movement of the carriage relative to said cable means to shift said valve lever.

9. In combination a frame, a carriage mounted for reciprocating movement on said frame, a uid pressure operated motor on said frame, transmission means between said motor and carriage for transmitting motion to the latter, means for delivering fluid under pressure to said motor including a control valve on the frame having an operating lever, two cables independently of said transmission means extending along said frame, means for connecting said cables to said valve lever and to said frame to act in opposite directions on said valve lever, a control unit on said carriage through which said cables are guided as the carriage moves along with respect to said cables and frame, said control unit having manually operable means on the carriage which is movable to exert a force on one or the other of said cables without interfering with the movement of the carriage with respect to said cables to shift said valve lever in a selected direction.

l0. In combination a frame, a carriage mounted for reciprocating movement on said frame, a driven rotatable member on said frame, means including an elongated flexible member connected between said rotatable member, frame and carriage for transmitting motion to the carriage, means independent of said flexible member for controlling the direction of operation of said rotatable member including a pivotally mounted lever on the frame, cable operating means connected at one end to said lever and at the other end to said frame and extending along said frame, a control unit on said carriage through which said cable means is guided as the carriage moves along with respect to said cable means and frame, said control unit having manually operable means on the carriage which is movable to alter the effective length of said cable means to shift said lever.

1l. In combination a frame, a carriage mounted for reciprocating movement on said frame, a motor on said frame, transmission means between said motor and carriage for transmitting motion to the latter, means for controlling the direction of operation of said motor including a pivotally mounted operating lever on the frame, cable operating means connected to said lever and extending along said frame independently of said transmission means, a control unit on said carriage through which said cable means is guided as the carriage moves along with respect to said cable means and frame, said control unit having manually operable means on the carriage which is movable to exert a force on said cable means to shift said lever without interfering with the movement of the carriage relative to said cable operating means.

l2. In combination a frame, a carriage mounted for reciprocating movement on said frame, a motor on said frame, means between said motor and carriage for transmitting motion to the latter, means independent of said last means for controlling the direction of operation of said motor including a control element for said motor and including two cables extending along said frame and connected at one end to the frame and at the other end to the control element, a control unit on said carriage including a rotatably mounted disk having two pairs of rotatable pulleys thereon, the individual pulleys of each pair being oppositely disposed on the disk, one of said cables being guided around the pulleys of one pair and the other cable being guided around the pulleys of the other pair as the carriage moves along with respect to said 'cables and frame, said control unit including means on the carriage for rotating said disk to shift the position of the pulleys thereon and exert a force on one or the other of said cables to thus move the control element and control the direction of said motor and hence the direction of movement of said carriage.

UNITED STATES PATENTS Schnieret a1, Feb. 7, 1888 Baxter Oct. 27, 1903 jBradford June 28, 1927 -Iackson Dec. 15, 1942 DeBarbieri et al.` Nov. 9, 1948 VDalyrmple Ian. 2, 1951 Hansen July 22, 1952 

